Except as otherwise provided in Rule 403.C.1 a person shall not discharge into the atmosphere from any source
particulate matter in excess of 0.3 grains per cubic foot of dry gas at standard conditions.

B. DUST AND FUMES

A person shall not discharge in any one hour from any single source whatsoever dust or fumes in total quantities
in excess of the amount shown in the following table.

To use the following table, take the process weight per hour as such is defined in Subsection 61 of Rule 105.
Then find this figure in the table and number to the right is the maximum number of pounds of contaminants which
may be discharged into the atmosphere in any one hour. As an example, if A has a process which emits contaminants
into the atmosphere and which process takes 3 hours to complete, he will divide the weight of all materials in
the specific process, in this example 1,500 lbs, by 3 hours giving a process weight of 500 lb/hr. The table shows
that A may not discharge more than 1.77 lbs in any one hour during the process. Where the process weight per hour
falls between the figures in the left hand column, the exact weight of permitted discharge may be interpolated.

C. COMBUSTION CONTAMINANTS

A person shall not discharge into the atmosphere from any existing single source of emission whatsoever combustion
contaminants, in any state or combination thereof, exceeding at the point of discharge 0.3 grains per cubic foot
of gas calculated to 12 percent of carbon dioxide (CO2) at standard conditions. In measuring the combustion
contaminants from incinerators used to dispose of combustible refuse by burning, the carbon dioxide (CO2)
produced by combustion of any liquid or gaseous fuels shall be excluded from the calculation to 12 percent of carbon
dioxide (CO2).

A person shall not build, erect, install or expand any non-mobile fuel burning equipment unless the discharge
into the atmosphere of contaminants, as defined in Rule 105, will and does not exceed 10 pounds per hour derived
from the fuel.

For the purpose of this subsection, a fuel burning equipment unit shall be comprised of the minimum number of
boilers, furnaces, jet engines or other fuel burning equipment, the simultaneous operation of which are required
for the production of useful heat or power.

Fuel burning equipment serving primarily as air pollution control equipment by using a combustion process to
destroy air contaminants shall be exempt from the provisions of this Rule.

Nothing in this Rule shall be construed as preventing the maintenance or preventing the alteration or modification
of an existing fuel burning equipment unit which will reduce its mass rate of air contaminant emissions.